include/crypto/ecdh.h

Source file repositories/reference/linux-study-clean/include/crypto/ecdh.h

File Facts

System
Linux kernel
Corpus path
include/crypto/ecdh.h
Extension
.h
Size
2522 bytes
Lines
84
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ecdh {
	char *key;
	unsigned short key_size;
};

/**
 * crypto_ecdh_key_len() - Obtain the size of the private ECDH key
 * @params:	private ECDH key
 *
 * This function returns the packet ECDH key size. A caller can use that
 * with the provided ECDH private key reference to obtain the required
 * memory size to hold a packet key.
 *
 * Return: size of the key in bytes
 */
unsigned int crypto_ecdh_key_len(const struct ecdh *params);

/**
 * crypto_ecdh_encode_key() - encode the private key
 * @buf:	Buffer allocated by the caller to hold the packet ECDH
 *		private key. The buffer should be at least crypto_ecdh_key_len
 *		bytes in size.
 * @len:	Length of the packet private key buffer
 * @p:		Buffer with the caller-specified private key
 *
 * The ECDH implementations operate on a packet representation of the private
 * key.
 *
 * Return:	-EINVAL if buffer has insufficient size, 0 on success
 */
int crypto_ecdh_encode_key(char *buf, unsigned int len, const struct ecdh *p);

/**
 * crypto_ecdh_decode_key() - decode a private key
 * @buf:	Buffer holding a packet key that should be decoded
 * @len:	Length of the packet private key buffer
 * @p:		Buffer allocated by the caller that is filled with the
 *		unpacked ECDH private key.
 *
 * The unpacking obtains the private key by pointing @p to the correct location
 * in @buf. Thus, both pointers refer to the same memory.
 *
 * Return:	-EINVAL if buffer has insufficient size, 0 on success
 */
int crypto_ecdh_decode_key(const char *buf, unsigned int len, struct ecdh *p);

#endif

Annotation

Implementation Notes